// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System;
using System.Runtime.CompilerServices;

namespace Microsoft.Toolkit.Mvvm.Messaging.Internals
{
    /// <summary>
    /// An empty type representing a generic token with no specific value.
    /// </summary>
    internal readonly struct Unit : IEquatable<Unit>
    {
        /// <inheritdoc/>
        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public bool Equals(Unit other)
        {
            return true;
        }

        /// <inheritdoc/>
        public override bool Equals(object? obj)
        {
            return obj is Unit;
        }

        /// <inheritdoc/>
        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public override int GetHashCode()
        {
            return 0;
        }
    }
}
